Measurements:
°C
°F
CURRENT WEATHER
04:27
Hilo
80°F
E 2 mph
Feels like: 84°F
Precip: 10%
World Resorts USA Hilo Weather

7 Day Weather Forecast

09.15
tue
DAY
82°F
W 4 mph
precip
16%
NIGHT
80°F
S 6 mph
precip
26%
09.16
wed
DAY
82°F
S 9 mph
precip
30%
NIGHT
80°F
S 13 mph
precip
29%
09.17
thu
DAY
82°F
NW 9 mph
precip
64%
NIGHT
82°F
NW 6 mph
precip
36%
09.18
fri
DAY
82°F
NW 11 mph
precip
32%
NIGHT
80°F
N 2 mph
precip
31%
09.19
sat
DAY
82°F
W 9 mph
precip
38%
NIGHT
80°F
W 9 mph
precip
54%
09.20
sun
DAY
82°F
SW 6 mph
precip
36%
NIGHT
80°F
SW 6 mph
precip
22%
09.21
mon
DAY
82°F
SW 9 mph
precip
32%
NIGHT
80°F
SW 7 mph
precip
54%

Hilo Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Hilo was 27.2°F. The maximum and minimum values were 27.0°F and 27.5°F respectively.

Hilo on the Weather Map

Best Time to Visit Hilo
The most sunny months:
January 17 days
October 15 days
September 14 days
The most warm months:
September 81.3 °F
August 81.1 °F
October 81.0 °F
Warmest sea temperature:
September 83.7 °F
October 83.3 °F
August 83.2 °F
The most cold months:
March 75.8 °F
February 75.9 °F
April 76.0 °F
The most rainy months:
March 6 days
November 5 days
February 5 days
The most windy months:
March 8 mph
April 8 mph
August 8 mph
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